/* Copyright (c) 2007 Paul Bakaus (paul.bakaus@googlemail.com) and Brandon Aaron (brandon.aaron@gmail.com || http://brandonaaron.net)
 * Dual licensed under the MIT (http://www.opensource.org/licenses/mit-license.php)
 * and GPL (http://www.opensource.org/licenses/gpl-license.php) licenses.
 *
 * $LastChangedDate: 2007-09-11 02:38:31 +0000 (Tue, 11 Sep 2007) $
 * $Rev: 3238 $
 *
 * Version: @VERSION
 *
 * Requires: jQuery 1.2+
 */

(function($) {

    $.dimensions = {
        version: '@VERSION'
    };

// Create innerHeight, innerWidth, outerHeight and outerWidth methods
    $.each([ 'Height', 'Width' ], function(i, name) {

        // innerHeight and innerWidth
        $.fn[ 'inner' + name ] = function() {
            if (!this[0]) return;

            var torl = name == 'Height' ? 'Top' : 'Left',  // top or left
                    borr = name == 'Height' ? 'Bottom' : 'Right'; // bottom or right

            return this[ name.toLowerCase() ]() + num(this, 'padding' + torl) + num(this, 'padding' + borr);
        };
	
	// outerHeight and outerWidth
        $.fn[ 'outer' + name ] = function(options) {
            if (!this[0]) return;

            var torl = name == 'Height' ? 'Top' : 'Left',  // top or left
                    borr = name == 'Height' ? 'Bottom' : 'Right'; // bottom or right

            options = $.extend({ margin: false }, options || {});

            return this[ name.toLowerCase() ]()
                    + num(this, 'border' + torl + 'Width') + num(this, 'border' + borr + 'Width')
                    + num(this, 'padding' + torl) + num(this, 'padding' + borr)
                    + (options.margin ? (num(this, 'margin' + torl) + num(this, 'margin' + borr)) : 0);
        };
    });

// Create scrollLeft and scrollTop methods
    $.each(['Left', 'Top'], function(i, name) {
        $.fn[ 'scroll' + name ] = function(val) {
            if (!this[0]) return;

            return val != undefined ?

                // Set the scroll offset
                   this.each(function() {
                       this == window || this == document ?
                       window.scrollTo(
                               name == 'Left' ? val : $(window)[ 'scrollLeft' ](),
                               name == 'Top' ? val : $(window)[ 'scrollTop'  ]()
                               ) :
                       this[ 'scroll' + name ] = val;
                   }) :

                // Return the scroll offset
                   this[0] == window || this[0] == document ?
                   self[ (name == 'Left' ? 'pageXOffset' : 'pageYOffset') ] ||
                   $.boxModel && document.documentElement[ 'scroll' + name ] ||
                   document.body[ 'scroll' + name ] :
                   this[0][ 'scroll' + name ];
        };
    });

    $.fn.extend({
        position: function() {
            var left = 0, top = 0, elem = this[0], offset, parentOffset, offsetParent, results;

            if (elem) {
                // Get *real* offsetParent
                offsetParent = this.offsetParent();
			
			// Get correct offsets
                offset = this.offset();
                parentOffset = offsetParent.offset();
			
			// Subtract element margins
                offset.top -= num(elem, 'marginTop');
                offset.left -= num(elem, 'marginLeft');
			
			// Add offsetParent borders
                parentOffset.top += num(offsetParent, 'borderTopWidth');
                parentOffset.left += num(offsetParent, 'borderLeftWidth');
			
			// Subtract the two offsets
                results = {
                    top:  offset.top - parentOffset.top,
                    left: offset.left - parentOffset.left
                };
            }

            return results;
        },

        offsetParent: function() {
            var offsetParent = this[0].offsetParent;
            while (offsetParent && (!/^body|html$/i.test(offsetParent.tagName) && $.css(offsetParent, 'position') == 'static'))
                offsetParent = offsetParent.offsetParent;
            return $(offsetParent);
        }
    });

    var num = function(el, prop) {
        return parseInt($.css(el.jquery ? el[0] : el, prop)) || 0;
    };

})(jQuery);